I do my best to keep this list updated, but sites disappear/move without notice.

Commercial sites are listed by company name which in the case of stamp companies is often the name of their stamp line. Some companies may carry additional stamp lines as well. (In such a case, only the company name is listed and not the additional lines unless the line has a completely separate web site.)

Codes following the site name are: c=commercial, p=personal, s=stamps. I have attempted to identify sites as personal or commercial but there are some sites, especially blogs, that may be a little of both.